August schroeder



(No Model.) 2 Sheets- 8119611 1. A. SCI-IROEDER. FRICTION CLUTCH.

Patented Dec. 9, 1896 In van/Z157,

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(.No Model.) 2 Sheets -Sheet 2.

'A. SOHROEDER. FRICTION CLUTCH.

No. 442,260. Patented Dec. 9, 1890.

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AUGUST SCHROEDER, OF RI'IEIDT, GERMANY.

FRlCTlON-CLUTCH.

SPECIFICATION forming part of Letters Patent No. 4A2,260, dated December9, 1890.

Application filed September 8, 1890. $erial No. 364,389. (No model.)

To 40% whom, it may concern:

Be it known that I, AUGUST SCHROEDER, engineeiyof Rheidt, in the Kingdomof Prussia and German Empire, have invented new and useful Improvementsin Friction-Clutches, of which the following is a specification,reference being had therein to the accompanying drawings.

The invention hereinafter described has reference to a friction-clutchfor coupling shafting, pulleys, cog-wheels, the.

The invention consists of a combined friction and toothed clutch bywhich first the friction-clutch and then the tooth-clutch is effected insuch a manner that the engaging and disengaging of the parts which haveto be coupled are perfectly free from any jar or shock.

The invention is illustrated 011 the annexed drawings, and may bedescribed as follows.

Figure I shows the clutches as they are when coupled. Fig. II shows theclutches as they are when uncoupled,both shown in longitudinal section.Fig. III represents in one half a front exterior view of the clutch andin the other half an inner view showing the teeth-faces.

The invention has the following construction.

a and h are the shafts to be coupled.

c is a face-plate keyed on the shaft Z). The said faceplate c isprovided with a toothed inner rim (1 and a plainlytnrned cylindricalface 6. To the front of the face-plate c the ring f is screwed on byset-screws, as illustrated.

On the shaft to is mounted a bush 5 upon which is fixed the clutch-boxIt so that it may traverse in the direction of its length. The bush g isfurnishedon its inner extremity, which lies inside the recess of theface-plate c, with two bearings if, in which are mounted twospecially-formed double-armed levers 7f. The ends of these double leversare furnished with spherical knobs 71 which fit into two convergingrecesses Z 1, formed in the clutchbox 7L, and to the other arms of thesesame levers are connected links in, which at their other extremities areconnected to the brakeblocks '22. These brake-blocks n are of such awidth and so movable (in a somewhat inclined direction almost parallelwith the face of the toothed rim) that they rub first on the inner faceof the ring f in moving outward and then engage with their rear toothedfaces 0 into the toothed rim d of the faceplate 0. By a suitablelongitudinal traversing of the clutch-boX h, effected by means of thelever 19 and other suitable transferring parts, the clutch-box 7L ismoved to and fro upon the bush g. The recesses Z Z being stationary inthe clutch-box 71 a movement of the brakeblocks in the radial directionis effected.

The action of this mechanism is as follows: In case the shafts a and I)have to be coupled together, the ends it" of the levers 7:, by thesliding of the clutch-box h along the bush g, get pushed out of theposition represented in Fig. 2 and brought into that illustrated inFig. 1. The faces is of the brake-blocks are thus first brought intocontact with the inner face of the ring f, and thus from the revolvingface-plate c first the brake-blocks n and then the shaft to are slowlyturned. By further pushing of the b rake-blocks into the hollow spacebetween the face 6 and the ringf such brake-blocks n are caused toengage with their teeth into the teeth (Z of the face c, whereby astrong coupling-connection is effected between the face-plate c, theclutchbox it, and the shaft a. In the disengaging of this improvedcoupling the connection is first severed between the teeth d and o, andthen by further drawing back of the brakeblocks a the connection isafterward severed between the friction-faces.

\Vhat I claim, and desire to secure by Let ters Patent of the UnitedStates, is

1. In combination with the shaft 1), a face plate or hub 0, providedwith a toothed rim (Z and a smooth face c, shaft a, carrying thebrake-blocks n, and means substantially such as shown and described formoving said blocks radially into and out of engagement with smooth face(2 and toothed rim (Z of the plate or hub c.

i. In combination with the shaft Z1,the face plate or hub c, prm'idedwith toothed rim (Z, smooth face 0, and ring f, shaft a, provided withbush g, levers carried by the bush, blocks 12, connected with the innerends of the levers and adapted to engage the face-plate, substantiallyas shown, and a sliding block h, adapted to actuate the levers.

of the length of the teeth, and means for mov- 3. In a combined frictionand toothed ing the blocks.

Rheidt, the 17th day of June, 1890.

clutch, the combination, with a shaft, of a 5 hub or plate 0, providedwith a friction-face Witnesses:

and a series of radial teeth, a shaft a, brake- PAUL FISCHER, blocks 01,moving radially or in the direction BERNH. DIETZE.

AUGUST SCI-IROEDER.

